Guide to the Wiring Regulations
Table D 14.1 Lighting and luminaire requirements. Track lighting shall comply with BS EN 60570
559.4
Heat of lamps on surrounding material shall be considered
559.5.1
Max. lighting circuit size of 16 amp (ES and BC lampholders)
559.6.1.6
Outer screw of ES lampholder must connect to neutral (except for E14 & E27 to BS EN 60238)
559.6.1.8
Through wiring only permitted if luminaire designed for it
559.6.2.1
Temperature rating if marked on luminaire gives heat withstand of cable; see Figure D 14.1
559.6.2.2
3-phase lighting circuits with common neutral shall have linked circuit breaker
559.6.2.3
Stroboscopic effects to be considered in areas with rotating machines (a stroboscopic effect can give the perception that moving objects are stationary when in fact they are moving)
559.9
Earth-free equipotential bonding not to be used
559.10.2
SELV transformers to be to BS EN 61558–2-6
559.11.3.1
1
ELV electronic convertor to be to BS EN 61347–2-2
2
559.11.3.2
SELV bare live conductor systems shall comply with BS EN 60598–2-23 or shall monitor and disconnect within 0.3 s, fail-safe
559.11.4.1 and 559.11.4.2
ELV flexes minimum 1.0 mm2 max. length 3 m
559.11.5.2
ELV flexes minimum 4.0 mm for luminaires suspended by the flex
559.11.5.2
Highway street furniture access door to be accessible only with key or tool or be 2.5 m above ground
559.10.3.1
Highway street furniture lamps to be 2.8 m high or behind barrier
559.10.3.1
Highway street furniture adjacent metal does not require bonding
559.10.3.1
Highway street furniture may use fuse carrier as isolator
559.10.6.1
Highway street furniture disconnection time is 5 seconds
559.10.3.3
2
and 2 Requirement only applies where SELV is being used as a protective measure. Often installers use SELV equipment but install it to 230 volt standards and this requirement will not apply (e.g. most ELV downlighter installations).
1
As well as ‘throwing the book’ at you with quite a few new regulations to study and digest, there is some helpful information in Section 559, mainly the markings found on some luminaires; this information originates in BS EN 60598–1: 2004 Luminaires and is given in Figure D 14.1.
D
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